- EMDB-60263: Cryo-EM structure of R-eLACCO2 in the lactate-bound state -
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基本情報
登録情報
データベース: EMDB / ID: EMD-60263
タイトル
Cryo-EM structure of R-eLACCO2 in the lactate-bound state
マップデータ
試料
複合体: R-eLACCO2 in the lactate-bound state
タンパク質・ペプチド: Lactate-binding periplasmic protein TTHA0766,Red fluorescent protein drFP583
リガンド: CALCIUM ION
リガンド: (2S)-2-HYDROXYPROPANOIC ACID
キーワード
FLUORESCENT PROTEIN
機能・相同性
機能・相同性情報
lactate transport / tripartite ATP-independent periplasmic transporter complex / bioluminescence / generation of precursor metabolites and energy / transmembrane transport / periplasmic space / calcium ion binding / protein homodimerization activity / zinc ion binding 類似検索 - 分子機能
Lactate-binding periplasmic protein TTHA0766 / Solute binding protein, TakP-like / TRAP transporter solute receptor DctP / TRAP transporter solute receptor DctP superfamily / Bacterial extracellular solute-binding protein, family 7 / Green fluorescent protein, GFP / Twin arginine translocation (Tat) signal profile. / Twin-arginine translocation pathway, signal sequence / Green fluorescent protein-related / Green fluorescent protein / Green fluorescent protein 類似検索 - ドメイン・相同性
Lactate-binding periplasmic protein TTHA0766 / Red fluorescent protein drFP583 類似検索 - 構成要素
ジャーナル: Nat Commun / 年: 2025 タイトル: A red fluorescent genetically encoded biosensor for in vivo imaging of extracellular L-lactate dynamics. 著者: Yuki Kamijo / Philipp Mächler / Natalie Ness / Cong Quang Vu / Tsukasa Kusakizako / Jamsad Mannuthodikayil / Zaneta Ku / Marc Boisvert / Ekaterina Grebenik / Ikumi Miyazaki / Rina Hashizume ...著者: Yuki Kamijo / Philipp Mächler / Natalie Ness / Cong Quang Vu / Tsukasa Kusakizako / Jamsad Mannuthodikayil / Zaneta Ku / Marc Boisvert / Ekaterina Grebenik / Ikumi Miyazaki / Rina Hashizume / Haruaki Sato / Rui Liu / Yukiko Hori / Taisuke Tomita / Tetsuro Katayama / Akihiro Furube / Gabriela Caraveo / Marie-Eve Paquet / Mikhail Drobizhev / Osamu Nureki / Satoshi Arai / Marco Brancaccio / Robert E Campbell / David Kleinfeld / Yusuke Nasu / 要旨: L-Lactate is increasingly recognized as an intercellular energy currency in mammals, but mysteries remain regarding the spatial and temporal dynamics of its release and uptake between cells via the ...L-Lactate is increasingly recognized as an intercellular energy currency in mammals, but mysteries remain regarding the spatial and temporal dynamics of its release and uptake between cells via the extracellular environment. Here we introduce R-eLACCO2.1, a red fluorescent extracellular L-lactate biosensor that is superior to previously reported green fluorescent biosensors in in vivo sensitivity to increases in extracellular L-lactate and spectral orthogonality. R-eLACCO2.1 exhibits excellent fluorescence response in cultured cells, mouse brain slices, and live mice. R-eLACCO2.1 also serves as an effective fluorescence lifetime-based biosensor. Using R-eLACCO2.1, we monitor whisker stimulation and locomotion-induced changes in endogenous extracellular L-lactate in the somatosensory cortex of awake mice. To highlight the potential insights gained from in vivo measurements with R-eLACCO2.1, we perform dual-color imaging from the somatosensory cortex of actively locomoting mice. This enables us to simultaneously observe the neural activity, reported by a green fluorescent GCaMP calcium ion biosensor, and extracellular L-lactate. As the high-performance tool in the suite of extracellular L-lactate biosensors, R-eLACCO2.1 is ideally suited to delimit the emerging roles of L-lactate in mammalian metabolism.
UniProtKB: Lactate-binding periplasmic protein TTHA0766, Red fluorescent protein drFP583, Red fluorescent protein drFP583, Lactate-binding periplasmic protein TTHA0766
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分子 #2: CALCIUM ION
分子
名称: CALCIUM ION / タイプ: ligand / ID: 2 / コピー数: 1 / 式: CA